Account Disabled Message

Greetings,
I’m on a Win 7 64bit box and running Pidgin 2.10.6. It was working flawlessly for a while until recently, and now I’m getting the message: “Welcome back! 1 account was disabled because you signed on from another location.” The account it refers to is the only account I have configured and it’s using the XMPP protocol. Any suggestions as to how I might resolve this so I can continue using Pidgin as opposed to the hideous and obtrusive Cisco Unified Personal Communicator?
Thanks in advance for your help.
be
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